Protection of the whistleblower's rights in Great Britain

Britain has spent more than a quarter-century with one of the world's earliest dedicated whistleblower laws, and the country is still cited as a benchmark for the rest of Europe. The picture as the law approaches its thirtieth birthday is more complicated. The Public Interest Disclosure Act's three-route disclosure model is being pulled in opposite directions at once. A Private Member's Bill in the Commons wants to scrap it outright, the Court of Appeal has expanded what dismissed whistleblowers can claim, and the Employment Rights Act 2025 has widened what counts as a protected disclosure.

Tony Blair in 2002. His first government brought the Public Interest Disclosure Act into force in July 1999.
© The White House (public domain)

From corporate disasters to PIDA

The British framework did not come from a Whitehall task force. It came from a string of disasters in the late 1980s and early 1990s (the Maxwell pension theft, the BCCI bank collapse, the Clapham Junction rail crash, the Herald of Free Enterprise sinking) where official inquiries kept reaching the same conclusion: people inside the organisations had seen warning signs and felt unable to raise them. In 1993 a charity called Public Concern at Work was set up by lawyers and inquiry staff to do something about that, running a free legal advice line and lobbying for statutory protection.

Five years of drafting later, Conservative MP Richard Shepherd's Public Interest Disclosure Bill went through Parliament with cross-party support, and Tony Blair's first government brought it into force on 2 July 1999 as the Public Interest Disclosure Act 1998. It was at the time the most far-reaching whistleblowing law in Europe. The charity that drove it has since handled around 50,000 cases, supports about 3,000 callers a year, and rebranded as Protect in September 2018.

Three routes for a protected disclosure

PIDA does not protect every employee who simply tells someone about something dodgy at work. It protects qualifying disclosures made through one of three statutory routes, in roughly increasing order of public exposure:

1. directly to the employer, or to a third party named in the employer's own whistleblowing procedure;
2. to a prescribed person, meaning a regulator or office-holder formally listed for the subject matter, such as the Financial Conduct Authority for financial services or HMRC for tax;
3. to a wider audience (typically the press, an MP or a campaigning body), but only when the worker has good reason to believe internal or regulatory routes would lead to retaliation, evidence destruction or no action.

Across all three routes the worker must reasonably believe the disclosure is in the public interest and substantially true. The list of prescribed persons is updated by statutory instrument. The most recent extension, in force from 26 June 2025, added HM Treasury, the Secretary of State for Business and Trade, and the Secretary of State for Transport for sanctions-related disclosures.

Why PIDA is starting to creak

PIDA was a 1998 statute drafted for 1998 workplaces. Twenty-seven years on, the limitations are no longer subtle. Protections still flow primarily through the employee relationship, even though tribunal case law has gradually pulled some categories of contractor and trustee inside; whistleblowers must personally fund litigation, often against well-resourced corporate defendants; and there is no central regulator with the power to set standards for how organisations handle disclosures internally.

The 2019 EU Whistleblowing Directive sets a baseline that most of Europe now exceeds the UK on: mandated internal channels, time-bound feedback obligations, an explicit reverse burden of proof on retaliation. Protect, the charity that lobbied PIDA into existence, now openly campaigns for it to be replaced. The volume question is not the problem: the Financial Conduct Authority received 1,131 protected disclosures in 2024/25, with compliance, fitness and propriety, and culture topping the categories. Only around three to five per cent of closed cases lead to what the regulator calls "significant action".

The 2025 reform push

The Palace of Westminster, where the Office of the Whistleblower Bill is awaiting its second reading.
© Daniele Vaghini (CC BY-SA 3.0)

The most concrete reform vehicle is the Office of the Whistleblower Bill, a Ten Minute Rule Private Member's Bill introduced by Labour MP Gareth Snell in December 2024. Its long title proposes an independent statutory body that would set, monitor and enforce standards for handling whistleblowing cases, run disclosure and advice services, direct investigations and order redress for detriment. Ten Minute Rule bills depend on government time to progress, but its very existence has shifted the conversation from "fix PIDA" to "replace it".

The Employment Rights Act 2025 takes a smaller but live step. From 6 April 2026 sexual harassment becomes an explicit qualifying disclosure under whistleblowing law. Workers who report harassment, whether of themselves or of colleagues, fall squarely within PIDA's protections rather than having to argue an indirect route through criminal-offence or legal-obligation categories. The change does not turn every harassment complaint into whistleblowing, but it removes a doctrinal obstacle tribunals have wrestled with for years.

Cases redrawing the map

While Parliament debates structural reform, the courts have been moving the goalposts on their own. In Rice v Wicked Vision the Court of Appeal held in November 2025 that a worker dismissed for whistleblowing can also bring a parallel detriment claim under section 47B against the co-worker who effected the dismissal, with the employer vicariously liable. The Supreme Court granted permission to appeal in December 2025, so the final answer is still pending. The practical effect is already that employers face dual claims arising from a single dismissal.

A separate Employment Appeal Tribunal ruling has confirmed that disclosures made before an engagement starts can still be protected, opening the way for trustees, presidents-elect and other quasi-employee roles to fall inside PIDA. Read with the FCA's flat rate of significant action, the cases describe the same picture: the law on paper has been pushed about as far as judicial interpretation can take it, and what is missing is the structural reform.

Britain still sits ahead of most of Europe on whistleblower protection, by virtue of having had a dedicated statute for a quarter-century longer than its neighbours. The gold-standard claim is harder to defend now than it was in 1999. Whether the next chapter is a refurbished PIDA or a new Office of the Whistleblower depends on parliamentary time more than on parliamentary appetite.